Concordance of the location of the innervation zone of the tibialis anterior muscle using voluntary and imposed contractions by electrostimulation

Guzmán-Venegas, Rodrigo; Bralic, M.P.; Cordero, Julio; Cavada, Gabriel; Araneda, Oscar F.

doi:10.1016/j.jelekin.2016.01.002

Cited by 12 publications

(10 citation statements)

References 29 publications

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“…Firstly, the IED of the two matrices used in this study was 8 mm. This distance corresponds to a spatial resolution for IZ detection of 4 mm, relatively large compared to others [11, 15]. Hence, our method may not detect potentially smaller (i.e., 2–3 mm) medial-lateral or intensity-related differences in IZ.…”

Section: Discussionmentioning

confidence: 85%

“…However, this approach is not possible in patients who are unable to exert the necessary force because of paralysis or poor motor control. An alternative method for IZ location is to generate forces and associated EMG (i.e., M-wave) evoked by electrical stimulation (ES) [11].…”

Section: Introductionmentioning

confidence: 99%

“…One study used both VC and ES in the tibialis anterior of adults and found no significant differences in the IZ location between the two methods [11]. However, the surface EMG signals were detected using a single-column linear array, and thus could not detect the overall IZ distribution.…”

Section: Introductionmentioning

confidence: 99%

“…No one has addressed this issue comprehensively with ES. In the previous study of the tibialis anterior [11], IZ locations were obtained during low VC and ES force contractions only, equal to about 10% of the maximum voluntary contraction (MVC) force. Others have shown that the IZ location is dependent on the force level of the VC used to detect it [14, 15], but whether this is the case with different intensities of ES is unknown.…”

Section: Introductionmentioning

confidence: 99%

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Innervation zone distribution of the biceps brachii muscle examined using voluntary and electrically-evoked high-density surface EMG

Huang

Klein

Meng

et al. 2019

J NeuroEngineering Rehabil

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Background High density surface electromyography (EMG) can be used to estimate muscle innervation zones (IZ). The objective of this study was to compare the differences in the distribution of the biceps brachii (BB) IZ derived from voluntary contractions (VC) and electrical stimulation (ES) of the musculocutaneous nerve. Methods Surface EMG signals were recorded from the medial and lateral BB with two 64-channel high density electrode matrices in eight healthy men. The surface EMG was recorded at different percentages of the maximal voluntary contraction (MVC) force (20–100% MVC) and at different percentages of the current needed to elicit a maximal M-wave (20–100% I max ). The IZs of the medial and lateral BB were identified from the EMG signals and expressed as a row number within a given medial-lateral column. Results ES current intensity had no significant effect on the group mean IZ location ( p > 0.05). However, The IZ during VC was located more proximally with increasing force ( p < 0.05), likely due to muscle shortening. The position of the IZ varied slightly (by up to ~ 8 mm) in a medial-lateral direction under both contraction types, but this spatial effect was not significant. The IZ during ES and weak VC (20, 40% MVC) was similar ( p > 0.05), but was more proximal in the latter than the former during 60–100% MVC ( p < 0.05). Conclusion ES can be used to detect spatial differences in IZ location free of the confounding effects of muscle shortening and recruitment order of different sized motor units. The method may prove beneficial for locating the IZ in patients who lack voluntary control of their musculature.

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Section: Discussionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Innervation zone distribution of the biceps brachii muscle examined using voluntary and electrically-evoked high-density surface EMG

Huang

Klein

Meng

et al. 2019

J NeuroEngineering Rehabil

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show abstract

“…In this regard, the study of the formation and perfection of the mechanism of implementation of sensory corrections in the process of natural locomotion formation is relevant for understanding the mechanisms of the human motor function control. An objective method to obtain information about changes in the operation of skeletal muscles is electromyography (Andersson et al, 1997;Melchiorri and Rainoldi, 2011;Urbanek and Van der Smagt, 2016;Guzmán-Venegas et al, 2016;Murray et al, 2016;Pagé et al, 2016;Jones et al, 2016;Maenhout et al, 2016;Stewart and Gregory, 2016;Charissou et al, 2016;Inada et al, 2016;Stein et al, 2016). The study of the surface EMG of masters of sport in powerlifting in previous studies allowed establishing the changes in the pattern types, parameters and the ratio of volumes of the bioelectric activity of the studied muscle groups when doing squats with different weights (Chermit et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

The Manifestation of the Discrete and Continuous Types of Bioelectric Control of Natural Locomotion at the Over-Five Age

Chermit¹,

Zabolotniy²,

Shakhanova³

2016

American Journal of Applied Sciences

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Abstract:The concept of physiology of activity by N.A. Bernstein, developed on the grounds of in-depth theoretical and empirical analysis of natural human locomotion, served as a basis for understanding the target determination of human behavior, the mechanisms of motor skills formation and levels of building movements. Scientific and technological progress has determined the emergence of new methods for registration of natural human locomotion parameters, complementing Bernstein's concept with new structures. The method of interference surface electromyogram based on the "Neuro-MEP" computer system of the Neurosoft Company (Ivanovo, Russia) was used to study the indicators of signal implementation amplitude and frequency, as well as electromyogram patterns of shank, thigh and back muscles during squatting by 5-6-yearold children. The dominant types of patterns were determined. It has been found that in the study of muscle groups, the electromyogram burst waveform dominates at the age of 5 years and the monophasic waveform dominates at the age of 6 years. Based on the analysis of the content of obtained electromyograms, we justified the discrete and continuous type of bioelectric control. The discrete type dominates at the age of 5 years. The main criterion of its manifestation is the record of the EMG burst waveform. The continuous type of bioelectric control dominates at the age of 6 against the EMG monophasic waveform recording. It has been revealed that formation of the established types of bioelectric control of the muscle groups under study is subject to the laws of heterochrony and heterotrophy.

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A robust permutation test for the concordance correlation coefficient

Hutson

2021

Pharmaceutical Statistics

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In this work, we developed a robust permutation test for the concordance correlation coefficient (ρc) for testing the general hypothesis H0 : ρc = ρc(0). The proposed test is based on an appropriately studentized statistic. Theoretically, the test is proven to be asymptotically valid in the general setting when two paired variables are uncorrelated but dependent. This desired property was demonstrated across a range of distributional assumptions and sample sizes in simulation studies, where the test exhibits robust type I error control in all settings tested, even when the sample size is small. We demonstrated the application of this test in two real world examples across cardiac output measurements and endocardiographic imaging.

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Concordance of the location of the innervation zone of the tibialis anterior muscle using voluntary and imposed contractions by electrostimulation

Cited by 12 publications

References 29 publications

Innervation zone distribution of the biceps brachii muscle examined using voluntary and electrically-evoked high-density surface EMG

Innervation zone distribution of the biceps brachii muscle examined using voluntary and electrically-evoked high-density surface EMG

The Manifestation of the Discrete and Continuous Types of Bioelectric Control of Natural Locomotion at the Over-Five Age

A robust permutation test for the concordance correlation coefficient

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